This study focuses on the latter class of challenges in FL, i.e., communication-efficiency, that refers to communication-related challenges, when the FL framework is to be implemented in a wireless network. In fact, FL schemes require several rounds of communication between a central node, often called the parameter server (PS), and the edge devices. This is in particular challenging when the scheme runs over remote wireless devices introducing various sources of imperfection to the setting, e.g., rate-limited communication links and noisy assessment of local model parameters [1]}, [2]}, [3]}.
